the cause of childhood obesity 英语C作文

the Cause of Childhood Obesity

Good morning everyone! Today I’ll talk about childhood obesity.

An increasing number of children are suffering from childhood obesity in recent years. According to the latest statistics from the National Health and Nutrition Examination Survey, "about 16 percent of children and adolescents ages 6-19 years are overweight."SumanKhatun, a 9 year-old Indian girl, has become the fattest child in the world for her weight of 92 kilograms.

By and large, childhood obesityis result of two main aspects.One is that many children have terrible diet habits. They eat lots of junk food, fast-food, high calorie foodand drink sodas which taste good but have no nutritional value.Another is thatnumerouschildren never do exercise regularly. Compared with doing physical exercises, they prefer playing computer games at home.Nevertheless, we can blame these two reasons on family, school and society. First, a great many of parents are so busy with their business and spend little time with their kids. They rarely cook and just give money to children, let alone take them for exercise. In addition, the foods for lunch in their school are of poor quality and distasteful. Rather than eating in student canteen, they may go out and have lunch in fast-food restaurants. What’s more, lots of schoolsemphasizeacademic achievement and pay no attention to physical activity. And furthermore, there are always a large number of advertisements about candies, chocolates, and fast food on TV, and kids are most likely to be convinced to buy these unhealthy foods.Therefore, children can usually make their own food decisions and develop bad eating habits and then put on weight.

Hence, for the sake of children, I hope that parents cook for them, schools provide safe and tasty lunches and there are fewer advertisements for unhealthy foods.

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3.谓语的替代 在as和than 引导的比较状语从句中，由于句式同前面 主句相同，为避免重复，常把主句中出现而从句中又出现的动词用do的适当形式来代替。 John speaks German as fluently as Mary does. 4.前后的比较对象应一致 不管后面连词是than 还是as,前后的比较对象应一致。The weather of Beijing is colder than Guangzhou. x than前面比较对象是“天气”，than 后面比较对象是“广州”，不能相比较。应改为: The weather of Bejing is colder than that of Guangzhou. 再如: His handwriting is as good as me. 应改为: His handwriting is as good as mine. 5.可以修饰比较级的词 常用来修饰比较级的词或短语有: Much,even,far,a little,a lot,a bit,by far,rather,any,still,a great deal等。 by far的用法: 用于强调，意为“...得多”“最最...”“显然”等，可修饰形容词或副词的比较级和最高级，通常置于其后，但是若比较级或最高级前有冠词，则可置于其前或其后。

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英语中的比较级和最高级

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